Discuss the below:
Q: A suburb of dayton, ohio, has four local dry cleaner that compete with each other on the basis of price and service speed. Each of them can perform the same basic services at the same level of quality. The following table provides the price that each dry cleaner charges a two-piece suit, as well as the quoted number of days that the service will take.
| Dry Cleaner |
Price |
Number of Days |
| A |
$8.00 |
3 |
| B |
$9.50 |
3 |
| C |
$9.00 |
2 |
| D |
$7.50 |
4 |
Which of these dry cleaners are NOT on the efficient frontier?